<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="http://www.opengis.net/swe/1.0.1" xmlns:gml="http://www.opengis.net/gml" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:swe="http://www.opengis.net/swe/1.0.1" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.1 2010-02-01">
	<xs:annotation>
		<xs:documentation>Schema for defining position data (location, orientation, etc...) based on aggregate data types
			
			Copyright (c) 2007,2010 Open Geospatial Consortium, Inc. All Rights Reserved.
			To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
		</xs:documentation>
	</xs:annotation>
	<!-- ================================================= -->
	<xs:import namespace="http://www.opengis.net/gml" schemaLocation="../../gml/3.1.1/base/gml.xsd"/>
	<xs:include schemaLocation="./aggregateTypes.xsd"/>
	<!-- ================================================= -->
	<xs:element name="Position" type="swe:PositionType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Position is given as a group of Vectors/Matrices, each of which can specify location, orientation, velocity, angularVelocity, acceleration or angularAcceleration or a combination of those in a composite state Vector. Each Vector can have a separate frame of reference or inherit the frame from the parent Position object.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="PositionType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="time" type="swe:TimePropertyType" minOccurs="0"/>
					<xs:element name="location" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="orientation" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="velocity" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="angularVelocity" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="acceleration" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="angularAcceleration" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="state" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:complexType name="AbstractMatrixType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractDataArrayType">
				<xs:attribute name="referenceFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Points to a spatial reference frame definition. Coordinates of the vector will be expressed in this reference frame</xs:documentation>
					</xs:annotation>
				</xs:attribute>
				<xs:attribute name="localFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Specifies the spatial frame which location and/or orientation is given by the enclosing vector</xs:documentation>
					</xs:annotation>
				</xs:attribute>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:element name="SquareMatrix" type="swe:SquareMatrixType" substitutionGroup="swe:AbstractDataArray">
		<xs:annotation>
			<xs:documentation>This is a square matrix (so the size is the square of one dimension) which is a DataArray of Quantities. 		It has a referenceFrame in which the matrix components are described</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="SquareMatrixType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractMatrixType">
				<xs:sequence>
					<xs:element name="elementType" type="swe:QuantityPropertyType"/>
					<xs:group ref="swe:EncodedValuesGroup" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="VectorOrSquareMatrixPropertyType">
		<xs:annotation>
			<xs:documentation>Vector/SquareMatrix is a data-type so usually appears "by value" rather than by reference.</xs:documentation>
		</xs:annotation>
		<xs:choice>
			<xs:element ref="swe:Vector"/>
			<xs:element ref="swe:SquareMatrix"/>
		</xs:choice>
	</xs:complexType>
	<!-- ================================================= -->
	<!-- Areas and Envelopes -->
	<!-- ================================================= -->
	<xs:element name="GeoLocationArea" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Area used to define bounding boxes</xs:documentation>
		</xs:annotation>
		<xs:complexType>
			<xs:complexContent>
				<xs:extension base="swe:AbstractVectorType">
					<xs:sequence>
						<xs:element name="member" type="swe:EnvelopePropertyType" maxOccurs="unbounded">
							<xs:annotation>
								<xs:documentation>Is this an aggregate geometry?</xs:documentation>
							</xs:annotation>
						</xs:element>
					</xs:sequence>
					<xs:attribute name="name" type="xs:token"/>
				</xs:extension>
			</xs:complexContent>
		</xs:complexType>
	</xs:element>
	<!-- ================================================= -->
	<xs:element name="Envelope" type="swe:EnvelopeType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Envelope described using two vectors specifying lower and upper corner points.
           This is typically use to define rectangular bounding boxes in any coordinate system.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="EnvelopeType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="time" type="swe:TimeRangePropertyType" minOccurs="0">
						<xs:annotation>
							<xs:documentation>Optionally provides time range during which this bounding envelope applies</xs:documentation>
						</xs:annotation>
					</xs:element>
					<xs:element name="lowerCorner" type="swe:VectorPropertyType"/>
					<xs:element name="upperCorner" type="swe:VectorPropertyType"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="EnvelopePropertyType">
		<xs:sequence minOccurs="0">
			<xs:element ref="swe:Envelope"/>
		</xs:sequence>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
	</xs:complexType>
	<!--         Composite/Aggregate Components - Vectors and Matrices            -->
	<!-- ================================================= -->
	<xs:complexType name="AbstractVectorType" abstract="true">
		<xs:complexContent>
			<xs:extension base="swe:AbstractDataRecordType">
				<xs:attribute name="referenceFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Points to a spatial reference frame definition. Coordinates of the vector will be expressed in this reference frame</xs:documentation>
					</xs:annotation>
				</xs:attribute>
				<xs:attribute name="localFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Specifies the spatial frame which location and/or orientation is given by the enclosing vector</xs:documentation>
					</xs:annotation>
				</xs:attribute>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:element name="Vector" type="swe:VectorType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>A Vector is a special type of DataRecord that takes a list of numerical scalars called coordinates. The Vector has a referenceFrame in which the coordinates are expressed</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ............... -->
	<xs:complexType name="VectorType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="coordinate" maxOccurs="unbounded">
						<xs:complexType>
							<xs:group ref="swe:AnyNumerical" minOccurs="0"/>
							<xs:attribute name="name" type="xs:token" use="required"/>
						</xs:complexType>
					</xs:element>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="VectorPropertyType">
		<xs:annotation>
			<xs:documentation>Vector is a data-type so usually appears "by value" rather than by reference. However, by reference is still useful when objects, for instance, share a location.</xs:documentation>
		</xs:annotation>
		<xs:sequence minOccurs="0">
			<xs:element ref="swe:Vector"/>
		</xs:sequence>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
	</xs:complexType>
	<!-- ================================================= -->
	<!-- ================================================= -->
</xs:schema>
